Soot blower



vSept-16,1924. I 1,508,679

P. W. DALRYMPLE SOOT BLOWER Filed Sept. 12, 1919 3 Sheets-Sheet 1 Sept.16, 1924.

P. W. DALRYMPLE SOOT BLOWER Filed Sept. 12. 1919 3 Sheets-Sheet 2 gijvm-Se t. 16 1924. 1,508,679

P. W. DALRYMPLE S 0 0T BLOWER Filed Sept 12 1919 3 Sheets-Sheet. 5

Patented Sept. 16, 1924.

PHILIP w. DALRYMPLE, 10F BALTIMORE, MARYLAND.-

eooe BLOWER p e-wee ti e @eefimhe 1919- iel 9 3 290- Pl nts, On ofthifli ult es n ei p eifed lu the aeeii l i n'o s t, as arb-0 ashese iother so id predue of eembustiel thehe z ting surfaces. ThisELQCLUlliilfltliOIll ee as e; most e fecti e ins l t o nd 17edu es he fifilfilli y of h Plan in P QPQ b'n t0 the extent o t e e'e i l etienhasbeen u o iiify in the pes to c e n h heziti ig su aeee from im to t m bybrushii'g 'ei sc aping, and co ling the erjto permit access for h sawn-P se $11911 09 ig mea s he les of s v e lhqurs Op ra ionf "the enering uni and i the meierity of plan m e b avoided if p seib e For use inprev ti g uch ac umula ion rin-relocat ng hem from i e to timeb'e or 'thy become e9 extensiv tmmeke hut ing de i (of h unit-"end cooling-[ heoiler necessary, apparatu known asf'sqet' blow rs has been (prov ded iarious forms- SiiQh Qe' lo er cemmenly n i t t .e r h e.

' group, a change of ci reotio'n being ac'combe 'e ry of wee-e eonec'ted ee t am head or 'd directedatthe he ing surfeeesen i i v i .t

' and momentum to one or'more ofthe oom- Whih th ee umula n efe ee o e ies't extensi ely depos ed. When i i cles r'e to m ve the acfculiulatlon, s. projec ed rom t nozz es against the u tece o b leaned,ues eting t e Pa ic e s th t hl y amp intothe re'o'r a e arr ed up theflue- Steem boil rs a ed id'ed into te Wel nown types, fi e tu e and 'Weertube, The heg ting surfaces of fire tube boilers ate Q9111: pa iv yconvenien of a cess for th pi poeeof: blowing out such eecmimle ione butwater tube boilers are 1. .3 iwfiessihle for I this operation. One f the,diiiiouities is thzit flue blm ng noz les, t eefi' etive, mus be oca edin th flho p of h r a e,"

Owing t he ce te qf t heating surfee o e Cle ned and. its die ributien,th di econ of. h et em bl t m th V ious new les m st e ha ged, that is,the surface mile h wep y theblest whieh is dire t d from im to timeh eist th-dil fe entpor imes o th si rfaee t be treated- V i u icesem yi e'eeee e eieli d pted to ;be swung through an are or having a 9111-"versai connection, have been installed, but he n er se e t d ieh t ey eu i c d has had the effect of making the moving Part inop t ve, a d cleni g o the hea mg surfaces by the old of direct method of oooling thefor aoe and scia ping the ri hits een 1Il QQ W e'ten h SW s i t Hiit dQThe Presen inve e P Q d /S 1 5 3 or more ooi i'eot ly; an arrangement of,iiozzles by Whihe s am ib iiso ql s f 313 fluid tinder e esslure may be trel ed a sj'd ie tien' W thout han i the pqs on. el-elation of then'iz lesi'et v id Wiflf l any m vi parts l f ii i y o th nzl zies 01their suppo its, "'S ichen'arra igefl eht of nozzles has beeii show' inthe aoc on fiziiiji ne' dra in s n eennee ql vi a W te tub boiler, the sin 01 1 r si g, wi h news; Silly oon'nectionsf eyes," et o, 21 11iiiip'roi'led oot bl wing @Piwr t e In acoo fdfzm ce with the ihventionthe nozzles z 'ree im igeglin groups so that the jets or blasts from"eaoh pf apl ifality of nozzles combine 131efefz b1y".1ie2if or pon esof "the hlozz ies, the ciii eotion. of the -es il t-zintbiast iSCQIitfQiiiGi by ohaiigirig the eiatiifiepressiire at Whioh the fluidCoinposing the blast "is supp lieeifto Ema released fro'ni' the lespectlvenozzles form ng such a biped strezims oil'blasts over that"from the remaining nozzle or noz'ziesi i the'pztytiou lai" groiip ofoonvergiiig nozzles. i In th eceemp i e l I e i1 lust rated a .Watertiibe boiler to Which e sootbiotvir g' apparatus embodying my inventionis applied.

Figu e l is a sideeievation, partly inseoof"iiliistratioi1", the, gamebeing adjacent from which co-operating nozzles of the same groups arefed.

Figure 6 is a view taken at right angles to the plane of Figure 5looking from the right of the apparatus as shownin Figure 5.

Figure 7 is a figure corresponding to Figures 3 and 4 showing thedistributing pipes with the nozzles grouped in threes.

Figure 8, is a plan view of Figure 7.

Figure 9 is an elevation of the water j acketed unit looking from therear, i. e.,-the bridge wall end of the furnace toward the front.

Figure 10 is an end elevation of the same looking from the left inFigure 9.

Referring to the drawing by numerals, the installation shown in Figure 1includes a drum 1, headers 2 and 3 connected to opposite ends of thedrum, the header 3 being lowest, and a nest of tubes 4 having the usualincline leading from the lower header 3 to the upper header 2. Thesetubes may have the usualor any suitable arrangement. They are located ina furnace 5 having a bridge wall 6 beyond which is a flue 7.

Crossing the group or nest of tubes 4 at right angles, preferably aboveand below the tubes and suitably spaced so that the steam can reach allof the surfaces which it is desired to clean, as hereinafter to bedescribed, I have shown pairs 10 of distributing tubes 11, 12. These arepreferably clamped together in close parallel arrangement, as shown'inFigures 5 and 6, the clamps being indicated by reference character 13.Steam or other suitable fluid under pressure is supplied to these pairsof distributer tubes -l0 from any available source. In the presentinstance I have shown a pipe connection 15 from a steam header 16 to amain 17 which runs along the base of the furnace. This header 17 isconnectedto each distributer 11, 12 of each pair of paralleldistributers 10 by suitable risers 19, 20 preferably arranged in pairsor otherwise for the purpose of permitting or providing for anindependent variation of the relative pressure in the distributers ofeach palr. The risers 19, 20 are .each connected to the respectivecorresponding distributers 11, 12 by means of elbows 21, 22 which, asshown, are tapered to ofier as little impediment as possible to thevelocity of the steam flowing to the distributers,

and the respective risers are controlled by a valve in each riser, seevalve 23 in each riser 19 and valve 24 in each riser 20.

The pairs 10 of distributers 11, 12 carry the pairs 25 of correspondingconverging nozzles 27, 28. These nozzles as shown, see

Figures 3 and 4, are arranged at 90, but the angle is merely a matter ofdistribution of the blast and determination of the surface to be sweptby the particular pair of nozzles affected and determination of theangle to which the direction of the blast may be varied. The pairs ofnozzles 25, see Figure 2, are spaced in accordance with the spacing ofthe tubes so as to reach and sweep the desired surfaces, the importantpoint being that each tube of each pair of tubes 10 supports one nozzleof each pair of nozzles 25 that the supply of fluid .to each nozzle isseparately controlled, so that by changing this pressure the angle ofthe resultant blast or spray may be sw ng through an angle equal to -orsubstantially equal to the angle at which the nozzles converge, the termconverge being used in the sense that the center lines of the streamsfrom the perspective nozzles intersect or substantially intersect.

The lower and forward group of distributer tubes, see Figure 1,indicated by reference character 42, is, as will be noted, so locatedthat it is subject to almost the maximum heat of the furnace.VVherefore'it is found necessary to jacket this group of tubes in orderto protect and preserve it from burning. This jacket is indicated in ageneral way by reference character 43. Water is supplied to the jacketfrom the mud drum 44 by way of a pipe connection 45 and led back to theboiler from the jacket by a'pipe connection 46. This jacketed unit orgroup is illustrated in detail in Figures 9 and 10. The same consists oftwo pipes 47 of almost twice the diameter of the distributer pipes 11,12. These are connected at their remote ends by a suitable fitting 48having plugs 49 which may be utilized in the insertion or removal of thesteam pipes or otherwise. At the nearend, as seen in Figure 1, and atthe left in Figure 9, these pipes are connected by a special fitting 50having a central partition 51 to separate the upper and lower partsof'the jacket to cause the water to circulate along the length'of thepipes. It is also tapped at the bottom 52 .for. connection to the watersupply pipe 45 and at the top at 58 for connection to t-he'return pipe46. This fitting is also shown as having openings opposite the ends ofthe distributer pipes indicated by reference character 54, the samebeing'closed by any suitable means 55. The steam risers 19,20 areconnected to the steam distributer pipes 11, 12 by means ofcorresponding pipe connections 56, 57 which pass through this fitting asindicated, being suitably connected to the steam pipe by elbows 58, 59inside the fitting 50. The openings which admit these pipes to thefitting 50 may have the necessary fit or be otherwise suitably packed asindicated at 60. I

The group of distributer tubes, or as many of them as desired, may beprovided with a pilot or indicator nozzle 65 outside thefurnace in plainview of the operator, and each being connected toboth the correspondingelbows 21, 22 by suitable fittings as indicated, the pilot or indicatornozzle having converging nozzle openings 66, 6 7 at the same angle asthose within the boiler carried by the corresponding distributer tubesbut preferably of less capacity. The object of this is to indicate tothe operator the direction taken by the steam jets as they are varied inthe use of the apparatus.

In Figure 7 I have shown a modified form of the invention in whichdistributers 31, 32, 33 are arranged in groups 35 of three distributersin a group, and the nozzles are correspondingly arranged in groups ofthree including a nozzle 36, 37 38 of each group carried by eachcorresponding pipe 31, 32, 33 so that each group of nozzles is composedof three converging nozzles, and the direction of the blast may be thusuniversally controlled instead of being confined in its direction to asingle plane as in the instance of nozzles arranged in pairs. Thenozzles shown in Figure 7 are intended to converge toward a single pointindicated by 40 in this figure.

As already pointed out, the distributer tubes are arranged in groups 10and 35 of two substantially parallel tubes 11, 12 or three substantiallyparallel tubes 31, 32, 33, or the desired number, and the nozzlescarried by each such group of tubes are arranged in a series of groupsor sets. Each nozzle of each set, to be most effective in accordancewith the invention, should be separately fed or otherwise arranged sothat the pressure of this nozzle may be controlled independently of theother nozzles of the same set. Therefore the number of distributer tubesin a group is logically made to equal the number of nozzles in eachgroup or set fed by the tubes without regard to the number of sets, theobject being to provide the necessary number of groups of convergingnozzles and means for supplying fluid under pressure to each nozzle, andmeans for controlling the pressure at some of the nozzles of each ofseveral of the groups independently of the other nozzles of the group,or more particularly, of varying the relative velocity and pressure ofthe jet from the respective converging nozzles composing any group.Preferably all the nozzles of the apparatus are so arranged in thedesired number of groups and the nozzles in the groups are all sorelatively controlled.

The operation. of the device will be clearly apparent from the preambletaken with the description and the drawings. Briefly considered; anysuitable fluid under pressure,

iently available iniboiler installations, is

supplied to the main 15 from a convenient j source as the steam header16. This supply, being controlled by valves 23, 24 in the .re-

spective pairs of distrubuter tubes 11, 12, is sowmanipulated as tochange the relative pressure .at the nozzles composing eachor any groupor pair, and hence the relative velocity of the respective jetscomposing the combined jet from each group of two or three or moreconverging nozzles so that the combined jet fro-1n each such group isswung through an are or cone limitedby the angle at which the nozzlesconverge, causing each such combined jet to sweep a corresponding areaof heating surface.

I have thus described specifically and in detail an apparatus embodyingmy invention in order that its nature and the manner of operating it maybe clearly understood; however, the specific terms herein are used inthe descriptive rather than in the limiting sense, the scope of theinvention being defined in the claims.

What I claim and desire to secure by Letters Patent is:

1. In a soot blowing or similar apparatus, means for directing andvarying the direction of a fluid jet consisting of a plurality ofconverging nozzles, means for supplying fluid under pressure to eachnozzle, and means for varying the relation which the pressure andvelocity of the supply of fluid to one of said converging nozzles bearsto the pressure and velocity of the supply to another of said nozzles.

2. In a soot blowing or similar apparatus, means for directing .andcontrolling the direction of a fluid jet consisting of a plurality ofconverging nozzles, the jets from which meet and unite to form a singlejet, and means for varying the relative pressure and velocity of thesupply to the respective nozzles.

3. In a soot blowing apparatus, a plurality of sets of convergingnozzles directed at the heating surface of a boiler, means for supplyingfluid under pressure to each of the nozzles of each set, having a singlejet for each set, and means for controlling the supply of fluid to onenozzle of each set and varying the pressure and velocity of said supplyrelatively to the pressure and velocity of the supply to another nozzleof each set.

4:. In combination with a boiler, a soot blower consisting of aplurality of sets of nozzles, the nozzlesv of each set converging toform a single jet directed at the heating surface, separate means forsupplying fluid under pressure toeach of a plurality of nozzles of eachset, and means for varying the relation borne by the supply to part ofthe nozzles in each of the sets to the supply to to engage difierent andvarying areas of the heating surface.

5. A soot blower consisting of a nuniber or units, each unit comprisinga plurality of converging nozzles, means for supplying fluid underpressure to each said nozzle, and means for varying the relation bornebv the supply to part of the nozzles in each 1 unit to the supply to theremainder of the nozzles in said unitsr Signed by .me at Baltimore,Maryland, thisfith. day'of September, 1919. T

PHILIP W. DALRYMPLE.

Witnesses: v

EMMA AHLSLEGER, EMMA l/VEHMEYER;

